Gandi/packet-journey

Failing to bring up dpdk0 on most recent dpdk-Version

Opened this issue · 4 comments

Sherazarde commented
  • Intel X540-AT2
  • DPDK git master (also tried with v17.05)
  • packet-journey git master
  • debian9 4.9.0-3-amd64

Packet-Journey as well as dpdk both compile without problems. Packet-Journey initializes correctly but as soon as dpdk0 is brought up i see the following:

KNI: ----   kni_config_network_interface
KNI: Configure network interface of 0 up
PMD: ixgbe_set_rx_function(): Vector rx enabled, please make sure RX burst size no less than 4 (port=0).
PMD: ixgbe_alloc_rx_queue_mbufs(): RX mbuf alloc failed queue_id=0
PMD: ixgbe_dev_rx_queue_start(): Could not alloc mbuf for queue:0
PMD: ixgbe_dev_start(): Unable to start rxtx queues
PMD: ixgbe_dev_start(): failure in ixgbe_dev_start(): -1
KNI: Failed to start port 0
KNI: finished kni_config_network_interface

Same issue with pretty much ANY kernel version, i've tried several starting with 3.10. on CentOS7. Digging around, i found this: most importantly:

EAL: Error - exiting with code: 1
Cause: Creation of mbuf pool for socket 0 failed:
Invalid argument

This error occurs as a result of the rte mempool ops table having 0 entries. This table is populated from a call to rte_mempool_register_ops().

This function gets called in rte_mempool_ring.c via the static initialization MACRO MEMPOOL_REGISTER_OPS and exists in librte_mempool_ring.so. However this library is not loaded when the rte_eal_init() gets called so the static initializers are not yet loaded.

This change was done recently to move ring handler into its separate drivers/mempool/ring directory. That also means it no longer is compiled into the librte_mempool.

Any advise on how to get packet-journey to work with a recent dpdk version?

Thanks!

Sherazarde commented

Please keep in mind, i might be totally off with my assumption, i've just scratched the surface as far as DPDK is concerned...

mherrb commented

After a long debugging session here at tetaneutral.net we found that commit b4f3c136a179f7fadcea8da0fb317d5202289785 in dpdk caused the error above.

the attached patch is enough to make it work with ixbge for us. Thanks to Laurent Guerby who did most of the git bisect work.

patch

Sherazarde commented

Thank you. I will test this and report back as soon as possible.

xwwang commented

I've got the same problem, and the solution given by mherrb doesn't work for me. May I ask if the problem has been solved ?